Cornwall
Solar panels in Helston, designed on a free call.
About 7,060 kWh a year from 12 panels in Helston, £6,360 installed, with your system designed on a free 30-minute video call.
Get my free quote
Three details. We call or text within one working day to book your free 30-minute design call, on video or by phone if you prefer.
or call 07782 219224
- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
How much a Helston roof makes, month by month
PVGIS puts Helston at 1,110 kWh per kWp a year, 9% above our Cornwall county estimate. 69% of it arrives between April and September, peaking in May.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 41.1 |
| February | 60.1 |
| March | 93.9 |
| April | 129 |
| May | 135 |
| June | 135 |
| July | 134 |
| August | 125 |
| September | 103 |
| October | 71.7 |
| November | 46.8 |
| December | 34.8 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
For scale: 1,110 kWh per kWp in Helston against 925, our GB average (the mean of our 85 county PVGIS estimates), which puts Helston 20% above it.
How Helston compares
Small towns rarely get published solar figures, so here are the numbers for Helston. It is one of 14 Cornwall towns we track, and it ranks 1st of 14 for solar yield, a town of 11,344 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,110 kWh per kWp a year, 3.04 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £982 of year one benefit, £247 of it from your own generation and £735 from export at 12p.
These are starting numbers, not a quote. The calculator below opens on Helston's own PVGIS figure; change the panels, the battery or the export rate and it reruns. The design call replaces every assumption with your roof and your bills.
Any planning application in Helston sits with Cornwall, and its official House of Commons Library settlement class is small town.
The charger is in the installed price but left out of payback: charging savings depend on your mileage and tariff, which the design call models properly.
Your real roof and usage, worked through on a free 30-minute video call. Use the full form or leave three details below.
Price this for your roof
Three details. We call or text within one working day to book your free 30-minute design call, on video or by phone if you prefer.
Modelled for Helston at 50.10407, -5.26974 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
The network operator for Helston
On NESO's licence-area map, Helston is in South West England, which National Grid Electricity Distribution (NGED) operates. That makes NGED the network operator for any system fitted here.
Most home systems stay within 3.68kW per phase of inverter output, which puts them on G98, a notification to NGED within 28 days of switch-on. Panel count does not decide it; the inverter and any battery do.
Above that, G99 means applying before the work is booked. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late.
Sources: NESO DNO licence areas (3 May 2024); NGED, guaranteed standards of performance table, checked 25 September 2026. G98 vs G99, explained.
Adding a heat pump or an EV charger in Helston
A heat pump in Helston
Heating demand peaks when solar is weakest. In Helston, a 12-panel system makes about 220 kWh in December and 260 kWh in January, a fraction of its 860 kWh in May, which is why a heat pump here is costed on its tariff first.
In England, the Boiler Upgrade Scheme pays £7,500 towards an air source or ground source heat pump and £2,500 towards an air-to-air one, with £1,500 more until March 2027 for homes heated by oil or LPG with no mains gas (gov.uk, checked 28 September 2026).
Charging an EV in Helston
Helston's May output, about 860 kWh from 12 panels, is several times the 70 kWh or so a typical home uses in daylight that month on our calculator's settings. Daytime charging turns that surplus into miles.
Renters and flat owners with private off-street parking can get 75% off a chargepoint and its installation, up to £500 per socket, until 31 March 2027 (gov.uk, checked 28 September 2026). The calculator above adds a 7.4kW smart charger from £1,100 installed.
The packages, priced before anyone visits
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Helston
If a system in Helston is underperforming, start with the guides below: repair benchmarks, service scope, and the inverter question.
Helston solar questions
How much energy would 12 solar panels make in Helston?
Helston averages 3.04 peak sun hours a day, which PVGIS turns into 1,110 kWh per kWp a year. On a 12-panel, 6.36 kWp roof that is about 7,060 kWh, 69% of it between April and September.
Is solar more expensive in Helston?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Helston, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 7,060 kWh a year here, which is what drives payback.
Who is the network operator in Helston, and do I need a G99 application?
The operator is National Grid Electricity Distribution (NGED). Most home systems use the G98 route, a notification within 28 days of switch-on for up to 3.68kW per phase, so nothing waits on the network. Above that, G99 applies and has to be granted first. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late. Your design call checks which route yours needs.
What could I earn from exporting in Helston?
On the 12p export scenario, a 12-panel system in Helston sends about 6,123 kWh a year to the grid, worth around £735. The export rates table compares what each supplier pays.
How does solar perform in Helston in the winter months?
December is the weakest month in Helston: about 220 kWh from 12 panels, against 860 kWh in May. The panels still generate on bright winter days; they just cover a smaller share of what the house uses.
How Helston compares with its neighbours
How the towns nearest Helston compare on the same PVGIS settings, closest first.
| Town | kWh per kWp a year | vs Helston |
|---|---|---|
| Helston | 1,110 | this town |
| Camborne | 1,026 | −84 kWh |
| Penryn | 1,062 | −48 kWh |
| Hayle | 1,102 | −8 kWh |
| Falmouth | 1,056 | −54 kWh |
| Redruth | 1,038 | −72 kWh |
| Penzance | 1,099 | −11 kWh |
Each row is a PVGIS v5.2 run at that town's centre with the same settings. Treat gaps of a few kWh as noise and gaps over about 30 kWh per kWp as real differences in sunshine.
Also for Helston: Solar panels in Helston from OVO Solar & Battery
See a number before you speak to anyone
Answer a few questions about your roof and usage and see an instant solar and battery estimate. No email needed to see the result.
Reading for Helston homeowners
Sourced, dated and written by us. The same ground we cover on your free call.
Why your inverter is smaller than your panel array, and why that is correct
More panel capacity than inverter capacity is a deliberate design choice.
Read the guide →Adding a battery to solar panels you already own
Retrofitting a battery to working solar is straightforward. The paperwork is where people trip up.
Read the guide →How solar aware EV charging actually works
The CT clamp, the surplus tracking and the 1.4kW floor that catches people out.
Read the guide →What MCS certification actually buys you on a heat pump job
The gate on the £7,500 grant, the design standard behind your running costs, and the noise sign-off.
Read the guide →Choosing a tariff when you have solar, a battery and an EV
Solar, battery and EV want different tariffs. How to work out which one to protect.
Read the guide →MCS, HIES, RECC, NAPIT, TrustMark and Flexi-Orb: which badge does what
Six logos, six different jobs. What each scheme covers, and which are actually required.
Read the guide →Get my free quote
Takes about two minutes. We call or text within one working day to book your free 30-minute video design call at a time that suits you. We design it around your roof and your numbers, and our MCS-certified, fully insured installation teams install it.